Calipers



1,567,517 Sept 2 1924 R. M. RQBLES CALIPERS Filed Jan. 2. 1923 I5Sheets-Sheet 1 waemazvlsb WITNESS ATTORNIY R. M. ROBLES CALIPERS Se t, 21924; 1 507517 Filed Jan. 2 1923 P V .mnnnunmnmmnnrnumym l Z INVENTORWITNESS:

Patented Sept. 2, 1924.

- UNITED STATES PATENT RAFAEL M. ROBLES, or MANILA, PHILIPPINE, ISLANDS.

CALIPERS.

- T all whom it may concern:

- side work, and the other end adapted for inthe pivoted members.

side Work, said members being simultane ously movable initially, and themembers used for inside work being susceptible of subsequent independentmovement to obtain the necessary difference between theinside andoutside measurements.

The nature and advantages of the invention will be better understoodwhen the following detailed description is read in connection' with theaccompanying drawings, the invention re'siding in the construction,combination, and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals ofreference indicate similar parts in the several views, and

wherein Figure 1 is a View in elevation looking at one side of thecaliper.

Figure 2 is an edge elevation. Figure 3 is aview similar to Figure 1,looking at the opposite side of the caliper. Figure 4 is a detail viewof one of the pivoted members.

Figure 5' is a detail view of another of Figure 6 is a sectional viewtaken'on line 6 6 of Figure 1.

Figure 7 is a sectional view taken on line 77 of Figure 2. V

Figure 8 is a detail view of the adjusting means for the members formoving the lat ter simultaneously.

Figure 9 is a detail view of the remaining pivoted member of thecalipers. The calipers forming the subject matter of the presentinvention embodies three distinct pivoted members clearly illustrated inthe drawings and which-members are indicatedat A, B, and C respectively.These members are associatedbya common pivot 10 in a manner to behereinafter described. so that all of the members may be movedsimultaneously, and certain members adjus ed independent y of the o hermemb rs Application filed January 2, 1 23. Serial No. 610,253.

OFFICE. 1

The construction of the calipers is such, that one end of the device isused for outsidework, and the opposite end used for-inside work and forthis purpose, the membersare so arranged that the members A and C coop-zerate for outside measurements while the members A and B are usedtogether for in side measurements;

. The member A includes a curved end portion 11 which projects from anintern'iediate I body portion 12, and a straightport ion.13

which extends from the opposite sidelofthe body, portion as shown. Thebody. portion 12 has a curved edge graduated as at 14, and also providedwith an opening 15 for the re: ception of the pivot 10. The curved endportion 11 is also provided-with a slot 16 I for a purpose to behereinafter described; The member B 'also'includes a central bodyportion 17 having an opening '18 for there-i ception of the pivot 10,and projecting from the body portion isstraight leg'p'ortion 19, whichis arranged normally parallelwith the leg portion 13 of the member A,andcooperates therewith forobtaining inside'meas-- urements. body portion17 of the member Bis an ex- Projecting, obliquely "from the V tension 20terminating in a point 21, which is adapted to moveo-ver graduations 22pro vided on an extension 23 formedon the member C for apurpose to behereinafter more fully described. It will be noted that the graduations22 are in. inches and fractions thereof and increase from 0 which isarranged centrally of the extension 23' toward the opposite endsthereof. The gradio ations at one side of the 0 include the sign plus asindicated at 24, andthe graduations 'at the opposite side include" theIt will be .noted that the body portion 17 of the mem- E sign minusindicated at 25.

her B is also provided with an 'arcuate shaped slot 26, which coincideswith a slot.

27in the body portion of the member A and passed through these slots isahead pin 28.

The body portion 17 of the member B" is also provided with an indicatingpoint or character. 29' which cooperates with graduations 30 provided onthe opposite-side of the curved edge portion of the member A. As abovestated, this curved edge portion i is also provided with graduations14L, sosthat both sides of this curved portion is graduated asillustrated in Figures 1 and .3. The

indicating character 29 cooperates lwith the graduations 30,- sothatsa,readingmay be obtained for that end of the device used for inside work.

The member C consists of a curved leg portion 31, one end of which isprovided with an opening 32, to accommodate the pivot 10, which as abovestated, is common to all of the members A, B and C. The member Cadjacent this end carries the pin 28 which passes through the slots ofthe members A and B as above set forth. This end of the member C is alsoprovided with an indicating character 33 which cooperates with thegraduations 14 on the member A, so that a reading may be readilyobtained for outside measurements. As above stated, the member Ccooperates with the curved leg portion of the member A for outside work,and these members are moved in unison in a manner to be hereinafterdescribed. The member G is provided with the extension 23, the latterbeing graduated in the manner described, and these graduations arepresented to view at the same time the graduations are so presented,being on the same side of the device in its entirety. This extension 23is provided with a curved slot 34, which receives an apertured lug 35formed on one end of a threaded element 36, this element being equippedwith a nut 37 as shown.

The obliquely disposed extension 20 of the member B is provided with anopening 38 to receive the apertured lug 35, so that when the threadedelement 36 is adjusted in the slot 34, the extension 20 will becorrespondingly moved over the graduations 22 of the said extension 23of the member C.

To eflect this adjustment, I make use of a threaded bolt 39 whichoperates in the apertured lug 35, this bolt having a head 40 which isprovided with a groove 41 having a swiveled connection with anaperturedlug 42 formed on one end of a pin 43 arranged at one end of theextension 23. The latter is provided with an opening 44 to receive theapertured lug 42. Manifestly, by turning the bolt in either directionthe extension 20 v of the member B will be moved to one side or theother of the 0 forming part of the graduations on the extension 23. Itis to be understood that the member B is loosely mounted on the pivot10, so that the member may be adjusted independently of the leg 13 ofthe member A to obtain the neces sary difference between the inside andout side measurements otherwise obtained by use of the device in itsentirety, while the member B is connected. in a manner just describedwith the member C, so that when the latter mentioned member is adjustedtogether with the member A, the member B is also simultaneouslyadjusted.

The members A and C are connected by means of a threaded element 45,which is pivoted at one end as at 46 upon the member C, while thisthrough an aperture-d lug 47, which slides in the arcuate-shaped slot 16of the member A. This lug is also arranged on one end of a pin 49 whichis associated with'the member A as shown. A nut 50 is carried by thethreaded element 45, and when this nut is actuated, the members A and Care simultaneously moved toward or away from each other, depending ofcourse upon the direction in which the nut is turned, these membersbeing so adjusted to determine the outside measurements of theparticular article threaded element passes being dealt with, while atthesame time, the

leg portion 19 of the member B, is simultaneously moved with relation tothe leg portion 13 of the member A. These leg portions are used fordetermining the inside measurements as above stated. The element 46 isIn practice, one end of the device is used for determining outsidemeasurements as above described, in which instance, the in-' dicatingcharacter 33 of the member C is used in connection with the graduations14 of the member A, and that all of the members are simultaneouslyadjusted or moved incident to the operation of the nut 50. The legs 13and 19 of the members A and B are adjusted relatively to determine theinside measurements,- in which instance, the indicating character 29 isused in connection with the graduations 30 of the member A. Now, afterthe outside measurements of the particular article dealt with have beendetermined, and it is found necessary to vary the insidemeasurements.determinedby the distance between the legs 13 and 19respec-' tively, it is only necessary to move the ex tension 20 of themember B along the graduated extension 23 of the member C the requisitedistance, with a consequent adjustment of the leg 19 with relation tothe leg 13. If the extension 20 is moved in a direction'of the sign plusat one side of the O on the extension 23, the distance between the "legs13 and 19 is increased accordingly, while, it theextension 20 is movedin a direction of the sign minus the distance between said legs aredecreased accordingly. The

calipers may be constructed from any suitablematerial and also vary insize without departing from the spirit of the invention,

and the device is designed to permitof itbeing easily handled, and italso operates with absolute reliability and accuracy.

While it is believed that from theforegoing description, the nature andadvantages of the invention will be readily apparent, I desire to haveit understood that I do not limit myself to what is herein shown anddescribed, and that such changes may be resorted to when desired as fallwithin the scope of what is claimed.

That I claim is 1. A device of the character described comprising a pairof pivotally connected members, each including a curved edge portion,said legs being used together for outside measurements, one of saidmembers including a straight leg portion, said last mentioned memberhaving graduations on both sides thereof, the other member of said pairhaving indicating characters cooperating with the graduations to providefor a reading of the device, an additional member pivotally associatedwith the aforementioned members, and including a straight leg portionarranged parallel with the aforementioned straight leg portion and usedtherewith for inside measurements, means for simultaneously adjustingthe members of said pair, means for independently adjust-ing the legportion of said additional member toward and away from the firstmentioned straight leg portion, and means for determining the degree ofthe last named adjustment.

2. A device of the class described comprising a pair of pivotallyconnected members, and an additional member pivotally associated withtheaforementioned members, one of the members of said pair havinggraduations thereon, said additional member having graduations thereon,the other member of said pair having indicating characters to cooperatewith said graduations to provide for a reading of the device, said beingadditional member members at one end of the device being designed to beused for inside measurements, said members at the other end of thedevice used for outside measurements, means for adjusting the pair ofsaid members relatively, and means for adjusting-the additional memberindependently of said pair of members for the purpose specified.

3. A device of the character described comprising a pair of pivotallyconnected members, each including a curved leg portion, the latter beingused together for outside measurements, one of said members including astraight leg portion, said last mentioned member having graduations on vboth" sides, the other of said members having indicating charactersadapted to cooperate with: said graduations, an extension formedon thesecond mentioned member and having graduations thereon, an additionalmember v pivotally associated with the first mentioned member, andincluding a straight leg portion arranged parallel with theaforementioned straight leg portion and used with the latter for insidevmeasurements, said additional member having an indicat-' ing charactercooperating with the adjacent graduations of the first mentioned member,means for simultaneously adjusting the members of said pair, saidadditional member including an obliquely disposed portion terminating ina point and movable over said graduated extension, adjustable meansconnecting said obliquely disposed port-ion with said extension, wherebysaid leg of the is substantially of independent adjustment toward andaway from the first mentioned straight leg portion for the purposespecified.

In testimony whereof Iafiix my signature.

RAFAEL? M. ROBLES.

